Malware descriptions

Another night, another Bagle

Last night we detected one new Bagle variant, this variant only had downloading capabilities and no massmailing functionality. (Except for the Trojan-Proxy functionality that is).

All download locations encoded in the Bagle’s body were dead, but are currently acitve and the author has put malware online.

This new malware is a Trojan-Downloader, we detect it as Trojan-Downloader.Win32.Small.asb.

Trojan-Downloader.Win32.Small.asb then downloads a new version of Email-Worm.Win32.Bagle.pac which has mass-mailing functionality. However, the samples which this worm spreads only have Trojan-Downloader functionality and no mass-mailing capabilities.

So basically it’s the same story as we had before with Email-Worm.Win32.Bagle.pac so far.

We’re monitoring the situation. Let’s just hope we won’t see as many variants in one day as last time.

Another night, another Bagle

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Reports

Lazarus targets defense industry with ThreatNeedle

In mid-2020, we realized that Lazarus was launching attacks on the defense industry using the ThreatNeedle cluster, an advanced malware cluster of Manuscrypt (a.k.a. NukeSped). While investigating this activity, we were able to observe the complete life cycle of an attack, uncovering more technical details and links to the group’s other campaigns.

Sunburst backdoor – code overlaps with Kazuar

While looking at the Sunburst backdoor, we discovered several features that overlap with a previously identified backdoor known as Kazuar. Our observations shows that Kazuar was used together with Turla tools during multiple breaches in past years.

Lazarus covets COVID-19-related intelligence

As the COVID-19 crisis grinds on, some threat actors are trying to speed up vaccine development by any means available. We have found evidence that the Lazarus group is going after intelligence that could help these efforts by attacking entities related to COVID-19 research.

Sunburst: connecting the dots in the DNS requests

We matched private and public DNS data for the SUNBURST-malware root C2 domain with the CNAME records, to identify who was targeted for further exploitation. In total, we analyzed 1722 DNS records, leading to 1026 unique target name parts and 964 unique UIDs.

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